<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
import { ElMessage } from 'element-plus'
//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
//定义数据模型
const registerData=ref({
    username:'',
    password:'',
    rePassword:'',
})

//校验密码函数
const chekRePassword=(rule,value,callback)=>{
    if(value==''){
        callback(new Error('请再次输入密码'))
    }else if (value!=registerData.value.password){
        callback(new Error('两次密码不一致！'))
    }else{
        callback()
    }

}
//定义表单校验规则
const rules={
    username:[
        {required:true,message:"请输入用户名",trigger:'blur'},
        {min:2,max:16,message:"长度为2~16位非空字符",trigger:'blur'}
    ],
    password:[
    {required:true,message:"请输入密码",trigger:'blur'},
    {min:5,max:16,message:"长度为5~16位非空字符",trigger:'blur'}
    ],
    rePassword:[
    {validator:chekRePassword,trigger:'blur'}
    ],

}
//调用后台接口，完成注册
import { userRegisterService,userLoginService } from '@/api/user.js'
const register=async()=>{

    let result= await userRegisterService(registerData.value);
    ElMessage.success(result.msg?result.msg:'注册成功')
}
//绑定数据复用注册表单的数据模型
//表单数据校验
//登录函数
import { useRouter } from 'vue-router'
import { useTokenStore } from '@/stores/token.js'
const router=useRouter()
const tokenStore=useTokenStore();
const login=async()=>{
    //调用接口，完成登录
  let result  =await userLoginService(registerData.value);
        ElMessage.success(result.msg?result.msg:'登录成功')
        //把得到的token存储到pinia中
        tokenStore.setToken(result.data)
        //跳转到首页，路由完成跳转
        router.push('/')
 }
//清空数据模型函数     
const ClearRegisterData=()=>{
    registerData.value={
        username:'',
        password:'',
        rePassword:''
    }
}
</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">
            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item  prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerData.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="'never'" @click="isRegister = false; ClearRegisterData()" >
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                         <el-checkbox>记住我</el-checkbox>  <!--可勾选框 -->
                        <el-link type="primary" :underline="'never'">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="'never'" @click="isRegister = true; ClearRegisterData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: 
            url('@/assets/login.png') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>